The 4 Wheel Trailer Hydraulic(Wood Body) is an all-around versatile trailer for all types of jobs. This industrial strength trailer is perfect for transporting large loads, from plywood, pallets of shingles, construction materials, to hand tools, generators, air compressors and more. It is a series of special vehicles that is used to transport large cargos that are difficult to disassemble. The hydraulics are typically located beneath the floor of the trailer, which operate a series of slats that move in a cycle. 4 Wheel Trailer Hydraulic(Wood Body) is very effective.